Press.



W. H. 6: W. W. CHAPMAN.

PRESS.

APPLICATION .HLED DEC. 22, 1313.

1,139,845., Patented May18,1915.

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T 3% Wkm$ ma /M I Mn owmi/ THE NORRIS PETERS C0,. PHOTC-LITMQ,wnamnc'mN, D. C

W. H. & W. W. CHAPMAN.

PRESS. APPLICATION FILED DEC-22. I913.

Patented May .18, 1915.

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rHE IORRJS PETERS CO., F'HOTOLITHOH WASHINGTON. D. C.

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WILLIAM H. CHAPMAN AND WALTER w. CHAPMAN, 0P NEWARK, New JERSEY; SAIDWALTER w. CHAPMAN ASSIGNOR 'ro SAID WILLIAM H. CHAPMAN.

PRESS.

Specification of Letters Patent.

Application filed December 22, 1913. Serial No. 808,097.

MAN and WALTER JV. CHAPMAN, citizens of I the United States, andresidents of Newark, in the county of Essex and State of New Jersey,have invented certain new and useful Improvements in'Presses, of whichthe following is a specification.

This invention relates to improvements in a press and its specificnovelty comprises adjustable means for controlling the length of thedown stroke of the slide of the press and consequently the punch or maledie thereof.

In the accompanying drawings Figure 1 represents a side elevation of apress with the invention incorporated therewith, Fig. 2 is a partialleft hand side view of Fig. 1, Fig. 3 is a top plan view of Fig. 1, Fig.4 shows a top plan view of a detail and Fig. 5 shows a bottom view ofFig. 4.

The press is shown comprising the legs 20 supporting the table 21 andupon the latter is secured the frame having the two main members 22. Thelatter have formed therewith the bolster bed 25, the guide 26 and thelugs 27. 7

Between the members 22 is located the foot lever 30, which has formed atits upper end the disk head 31 with the cavity 32, and from its lowerend extends the foot 33.

A pin 34 is supported in the lugs 27 and on which is fulcrumed the diskhead 31. A pin 35 is carried on said disk head and on which is fulcrumedone end of the link 40, the lower end of which latter is fulcrumed bymeans of the pin 41 to the slide 42. The latter is guided in the guide26 and carries at its lower end the punch 43.

The bolster bed 25 carries the bolster 45 which is detachably held inplaceby the clamping bolts 46, adjusted by the operating handle 48 asfully described in United States Patent #241,617, dated May 17,1881.

The bolster 45 carries the female die 44 that coacts with the punch 43.

A stripper block 47 is fastened to the frame of the machine andadjustably carries the strippers 49.

Fulcrum pins 50 are in threaded engagement with the members 22 of theframe and carry the double yoke frame having the upper member 51 and thelower member 52. The upper and lower members are joined to form the'leg53 and the leg 54. In the leg 53 is formed a bearing 55 for the pin 50and in theleg 54 is formed a bearing 56 for the other pin 50.

A bolt GOconnects the members 51 and 52 of the double yoke frame.

The member 54 of the double yoke frame has formed therewith the journalbearing 64 and the leg 54 has extending therefrom the end portion 65practically at right angles thereto.

A spindle 66 has one end journaled in the end portion 65 and the otherend is journaled in the bearing 64. p

A cross bar 67 with the operating handles 68 is fastened to one end ofthe spindle 66 and a worm 70 is formed at the other end of said spindle.I

A worm wheel 73 is supported on the bolt and meshes with the worm 70.

A cam 74 supported on the belt 60 is fastened to the worm wheel 73 bymeans of the screws 75.

' To operate the press the female die 44 is secured to the bolster 45and the punch 43 is fastened to the slide 42. The operator thendetermines the end of the down stroke of the said punch 43. Theoperating handles 68 are then used to adjust the location of the cam 74,and the edge of said cam is made to bear against the edge of the footlever 30, when said punch isat the end of its down stroke. The edge ofthe cam is preferably an harmonic curve or in the form of an Archimedeanspiral, although it may be of other curvature. .By turning the worm 70the worm wheel 73 positions the cam 74 in exactly the correct location.The cam performs the function of a stop for the foot lever. The pins 50allow the yoke supported thereon to adjust itself in proper position forthe various positions in which the said cam may be placed. It will benoted that the operating handles 68 are located adjacent to the frame ofthe machine and adjacent to the handle 48, so that both are within easyreach of the user of the machine.

Having described our invention, what we desire to secure by LettersPatent and claim is:

1. In an apparatus of the character described the combination of areciprocating element, a frame for the element, a lever fulcrumed in theframe, a connection between one end of the lever and said element, a camPatented May is, 1915.

positioned in the path of the elein ent' and means to adjust the cam "todifferent positions to control the strokes of said element.

2. In an'apparatus of the character de-' scribed the combination of aslide, apunch for the slide, a frame With a guide for the path of saidlever and means to adjust the cam.

V leverpivoted in said frame, a link connecte dopie s -of thisgatent'may. be obcained fonfivecents eac lnl'ny addressing theWashington, D. 0.,

8. In'an apparatus of the character de scribed the combination of aframe having a guide, a slide guided in said guide, a foot ing one endof the foot lever and said slide,

ayokepivoted; to the frame, a boltoonneet ing a pair of members. of theyoke, a orm Wheel and a cam supported on the bolt,

means connecting the Wheel and cam, a

' spindle supported in'bearings'on the yoke,

aworm at one end of the spindlemeshingf With the Worm'Wheel and anoperating handle at the other end of the spindle.

4. In an apparatus of the character described the combination of a framehaving a guide, aslideguided in said guide, a foot lever pivoted in saidframe, a connection.

WILLIAM, H. CHAPMAN. WALTER W. CHAPMAN. V

Witnesses:

FREDERICK W. PI-IILIPs, GEO. W. HONEYWELL.

Commissioner or Patents,

